spring security intercept method shows error

<bean id="messageBoardService" class="com.service.MessageBoardServiceImpl">
<security:intercept-methods>
<security:protect 
method="com.service.MessageBoardService.listMessages"
access="ROLE_USER,ROLE_GUEST" />
<security:protect 
method="com.service.MessageBoardService.postMessage"
access="ROLE_USER" />
<security:protect 
method="com.service.MessageBoardService.deleteMessage"
access="ROLE_ADMIN,IP_LOCAL_HOST" />
<security:protect 
method="com.service.MessageBoardService.findMessageById"
access="ROLE_USER,ROLE_GUEST" />
</security:intercept-methods>
</bean>

by executing the above lines of code its showing error

The matching wildcard is strict, but no declaration can be found for element 'bean'

and getting red underline on security intercept method tag

here are the list of jar files